Today 4 of us were riding together. One of the ladies had her tire to blow totally. It had a gaping rip in it. The other 3 of us hopped on bikes to get to a convenience store about 3/4 mile away. She started walking. She has MB Sidis. Amazingly the man in our group fashioned a boot out of a piece of a Coke can and some strong tape! A dollar wouldn't have worked. She said a couple of times she was soooo glad not to have on road shoes. The boot held long enough for us to get back to her car--6 miles.